215252223666349 has 2 divisors, whose sum is σ = 215252223666350. Its totient is φ = 215252223666348.

The previous prime is 215252223666211. The next prime is 215252223666353. The reversal of 215252223666349 is 943666322252512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129551972768100 + 85700250898249 = 11382090^2 + 9257443^2 .

It is a cyclic number.

It is not a de Polignac number, because 215252223666349 - 2¹¹ = 215252223664301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215252223666293 and 215252223666302.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215252223660349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107626111833174 + 107626111833175.

It is an arithmetic number, because the mean of its divisors is an integer number (107626111833175).

Almost surely, 2^{215252223666349} is an apocalyptic number.

It is an amenable number.

215252223666349 is a deficient number, since it is larger than the sum of its proper divisors (1).

215252223666349 is an equidigital number, since it uses as much as digits as its factorization.

215252223666349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55987200, while the sum is 58.

The spelling of 215252223666349 in words is "two hundred fifteen trillion, two hundred fifty-two billion, two hundred twenty-three million, six hundred sixty-six thousand, three hundred forty-nine".